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Piezochromism describes the tendency of certain materials to change color with the application of pressure. This effect is closely related to the electronic band gap change, which can be found in plastics, semiconductors (e.g. hybrid perovskites)[1][2][3] and hydrocarbons[4].


  1. Effects of Nonhydrostatic Stress on Structural and Optoelectronic Properties of Methylammonium Lead Bromide Perovskite. doi:10.1021/acs.jpclett.7b01367. 
  2. Pressure‐Induced Emission Enhancement, Band‐Gap Narrowing, and Metallization of Halide Perovskite Cs3Bi2I9. doi:10.1002/anie.201804310. 
  3. Mechanism of Pressure-Induced Phase Transitions, Amorphization, and Absorption-Edge Shift in Photovoltaic Methylammonium Lead Iodide. doi:10.1021/acs.jpclett.6b01648. 
  4. Piezochromism and structural and electronic properties of benz[a]anthracene under pressure. doi:10.1039/C6CP08171A. 

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